convert to_traceframe_info

2014-02-19  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_traceframe_info.
	(return_null): Remove.
	* target.h (struct target_ops) <to_traceframe_info>: Use
	TARGET_DEFAULT_RETURN.

1 files changed, 16 insertions, 0 deletions

diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index b0ada5c..a06a8e5 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -971,6 +971,19 @@ tdefault_static_tracepoint_markers_by_strid (struct target_ops *self, const char
   tcomplain ();
 }
 
+static struct traceframe_info *
+delegate_traceframe_info (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_traceframe_info (self);
+}
+
+static struct traceframe_info *
+tdefault_traceframe_info (struct target_ops *self)
+{
+  return 0;
+}
+
 static int
 delegate_supports_btrace (struct target_ops *self)
 {
@@ -1151,6 +1164,8 @@ install_delegators (struct target_ops *ops)
     ops->to_static_tracepoint_marker_at = delegate_static_tracepoint_marker_at;
   if (ops->to_static_tracepoint_markers_by_strid == NULL)
     ops->to_static_tracepoint_markers_by_strid = delegate_static_tracepoint_markers_by_strid;
+  if (ops->to_traceframe_info == NULL)
+    ops->to_traceframe_info = delegate_traceframe_info;
   if (ops->to_supports_btrace == NULL)
     ops->to_supports_btrace = delegate_supports_btrace;
 }
@@ -1240,5 +1255,6 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_set_permissions = tdefault_set_permissions;
   ops->to_static_tracepoint_marker_at = tdefault_static_tracepoint_marker_at;
   ops->to_static_tracepoint_markers_by_strid = tdefault_static_tracepoint_markers_by_strid;
+  ops->to_traceframe_info = tdefault_traceframe_info;
   ops->to_supports_btrace = tdefault_supports_btrace;
 }